So what is cannon in the doom timeline and in what order are they in? From what I've gathered it goes The Ultimate Doom, Doom ll, Doom(2016), Doom Eternal, and I'm not sure where the other games fit in.

Most of these are great, but it is confirmed that Doomguy(From doom (1993) at least) is bj blazkowicz the third, so I would say the timeline mosty looks like this:
Wolfenstein Games
Commander Keen Games
Doom Games:
After fighting in Hell for several years, Doomguy fights off the invasion of Argent D'nur along side the Knight Sentinels with the betrayer watching, but being one man Doomguy can't be everywhere at once and Argent D'nur falls and becomes part of hell. After seeing Doomguy's raw anger and hatered for the Demons, the betrayer grants Doomguy his new suit and new power, forever making him immune to age and making him the strongest and fastest human alive.
After eons of doing population control, the doomslayer falls into a demon trap, and the Tower of Babel is dropped on top of him and the Doomslayer is put into a deep slumber until the events of Doom 2016 kick off.

As far as I know this image is actually cannon as it depicts what appears to not only be Doomguy(More likely dubbed Doomslayer by this point) fending off Demons along side the knight sentinels who are trying to protect agent d'nur (This would explain why they show up later to "help" Doomslayer during the final level of Doom 2016 also known as argent d'nur) but also the hooded figure watching might be the betrayer, or perhaps I'm reading too much into this image and the reason the knights show up at the end is because you were destroying the wraiths. Who knows.

This makes the most sense to me, as I do believe the 2d games and the 2016 reboot are connected with doomguy and doomslayer being the same person simply due to this image seen in Sam's office:
As for Doom 3, I never considered it to fit into the timeline simply because of the art style of the demons and how different in design they appeared to be as well as how under-powered doomguy is, but at the same time there will be plotholes with this timeline. Like how did the hellknight go from a baron repaint to the doom 3 hellknight, why does the cacodemon have arms and no pupils, why does the mancubas now have one eye, how did the revenant go from being a demon brought back to life to being a UAC soldier turned demon. The list goes on, but I'll end it here.

So I'm making a homebrew Doom themed DND campaign and I was wondering if the stats I made are fair and balanced? Let me know your thoughts on them down below.
Heres the link: https://docs.google.com/document/d/1_nqs_mY103V5csJRbsH9_u7g74NNnqKm-ajXEtwmmRs/edit?usp=sharing

Does it really matter at this point tho, like do you actually wish they had tooken down D!Zone? If anything, these expansion packs may have actually boosted the popularly of the games. Plus too you have to go though a ton of trouble to sue someone, if we're being honest here

They also need the muscles for the part, as Doomguy has always been pretty beefy, unless we are doing the 2016 design, then it doesn't really matter. As for my top 3 it would be John Cena (He wasn't bad in the Bumblebee movie), The Rock (Hes got the eyebrows for it), or if we could go back in time, Arnold,as he had both the face and body for Doomguy, but hes past his prime nowadays.

I mostly went off of the Doom wiki to find out what counted as a boss for the Doom games I havn't played yet (This includes Doom 3), and they were not listed as one. Sorry I left them out, but to be a little fair two hell knights seem pretty tame compared to two barons.